Rainmachine errors

For quite a long time I have below errors in log while component seems to work fine. Any ideas what might be causing them?

2019-03-14 23:10:14 ERROR (MainThread) [homeassistant.core] Error doing job: Task exception was never retrieved
Traceback (most recent call last):
  File "/usr/local/lib/python3.7/site-packages/regenmaschine/client.py", line 85, in _request
    ssl=self._ssl) as resp:
  File "/usr/local/lib/python3.7/site-packages/aiohttp/client.py", line 1005, in __aenter__
    self._resp = await self._coro
  File "/usr/local/lib/python3.7/site-packages/aiohttp/client.py", line 497, in _request
    await resp.start(conn)
  File "/usr/local/lib/python3.7/site-packages/aiohttp/client_reqrep.py", line 844, in start
    message, payload = await self._protocol.read()  # type: ignore  # noqa
  File "/usr/local/lib/python3.7/site-packages/aiohttp/streams.py", line 588, in read
    await self._waiter
aiohttp.client_exceptions.ServerDisconnectedError: None

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.7/site-packages/homeassistant/components/rainmachine/__init__.py", line 178, in refresh
    await rainmachine.async_update()
  File "/usr/local/lib/python3.7/site-packages/homeassistant/components/rainmachine/__init__.py", line 257, in async_update
    'current': await self.client.restrictions.current(),
  File "/usr/local/lib/python3.7/site-packages/regenmaschine/restriction.py", line 14, in current
    return await self._request('get', 'restrictions/currently')
  File "/usr/local/lib/python3.7/site-packages/regenmaschine/client.py", line 90, in _request
    'Error requesting data from {0}: {1}'.format(self.host, err))
regenmaschine.errors.RequestError: Error requesting data from 192.168.1.183: None